Adjustable bracket



F. J. BLUME ADJUSTABLE BRACKET Nov. 11, 1952 Original Filed Aug. 18, 1945 f? vendor Patented Nov. 11, 1952 ADJUSTABLE BRACKET Frank Joseph Blume, Chicago, Ill.

Original application August 18, 1945, Serial No. 611,359, now Patent No. 2,472,805 dated June i I Divided and 13, 1949, Serial No. 98,775

this application June 1 Claim. (01. 248-229) This application is adivision of my application Serial No. 611,359 filed August 18, 1945, which matured into Patent No. 2,472,805 on June 14, 1949.

The present invention relates to a new and improved adjustable bracket for adjustably supporting any member which it is desired to support in an adjusted precise position from a stationary support. A plurality of the improved brackets may be used to support the opposite endsof an elongated rod or shaft with one of the brackets supporting an intermediate portion.

The improved" adjustable brackets may be conveniently and desirably employed for adjustably supporting opposite ends of a roller shaft in precisely adjusted position from a cylindrical or tubular stationary support as exemplified in my Patent No. 2,472,805 where endless belts in multiple belt conveying systems are provided with drive and idler rollers which must be accurately positioned with reference to other rollers and stationary supports for same.

The various features of novelty whereby the present invention is characterized will hereinafter be pointed out with particularity in the claim, but, for a full understanding of the invention and its objects and advantages, reference may be had to the following detailed description taken in connection with the accompanying drawing, wherein:

Figure 1 is a plan view of an adjustable bracket embodying my invention.

Figure 2 is a side elevation of the bracket taken on line 2-2 of Fig. 1.

Figure 3 is an end elevation of the bracket as viewed from a point to the right of Fig. 2.

Figure 4 is a cross-section of the bracket taken on line 4-4 of Fig. 2.

Figure 5 is a view similar to that shown in Fig. 2 but showing the roller shaft supported in a different position, angularly and radially, relatively to the axis of the pivotally mounted stub shaft of the bracket.

The invention is shown exemplified in its adaptation as a bracket for supporting ends of a roller shaft which is designated by numeral 12.

As illustrated in the accompanying drawing, the adjustable bracket comprises a clamp member, generally designated by numeral 63, composed of a pair of similarly shaped clamping jaws 63 and 63* having intermediate their ends arcuate, oppositely disposed, seats 63 for engagement of a stationary support such as, for example, a cylindrical pipe 56. The jaws of the clamp member 63 may be secured to the pipe support 56 as 2 by the tightening screw 68 which-is l'osely -c rried in one end of jaw 63 but has 'threadedconnection in the corresponding end 'of-jawj63 The opposite end of jaw 63 is provided tvith a round hole!!! which preferably is slightly frustoconically faced, the'lrin'er end of"the hole' lll' being slightly smeniin diarntrfthafl its outer end as more clearly'seen Fig. 4. Thecorresponding end of jaw 63 is' provided with around hole H which isfrusto-cdnically facedbutwardly from the inner side of the J'aw'an'd such frustoconical portion extends outwardly through-the major distance of the hole"?f ahdterminatesin an outer round opening" H of a diameter smaller than the frusto-conical portion H.

The bracket also includes an arm member generally designated by-numeral 64 which is rotatably adjustable relatively to and carried by the clamp member 63 and which arm member includes a tubular stub shaft 65 which is formed integrally with the arm 64 which contains an elongated slot 66.

The tubular stub shaft 65 projects from one side of the slotted arm 64, near one end thereof, and at the outer side of same is formed with a pair of relatively axially ofiset frusto-conical faces 65 and 65 which are adapted to be seated in respectively the aligned frusto-conical holes 10 and 'H of the clamp jaws when the arm 64 is rotatably mounted in the clamp member 63. The slot 66 is only very slightly wider than the diameter of a cylindrical pipe, bar or shaft which it is to snugly support, and the element to be supported may obviously be of another crosssection other than that of a cylindrical element, however, as illustrated in the drawing, the element shown supported near one end of the slot 66 is a roller shaft 72.

Set screws 6! and 61 extend into the slot 66 through the opposite ends of the arm, their axes registering with the longitudinal axis of the slot 66. The length of the slot 66 is preferably more than twice the diameter of shaft 12 so that, with the end of shaft 12 entered in the slot 66 between the inner ends of the set screws 61? and 61', it may be adjusted therein radially relatively to the axis of the stub shaft 65 of the arm 64 through a distance greater than the diameter of the shaft. Therefore, after the clamp has been located and secured at approximately the desired elevated position on a stationary supporting rod or, as shown, on a pipe 56, and the clamp screw 68 has been tightened, the shaft 12 may then be raised or lowered and shifted lengthwise of the slot 66 while the arm 64 is permissibly rotatable about the axis of the stub shaft 65. This is accomplished by loosening the screw 69 that holds the arm member 64 secure and then rotating or swinging the arm member 64 up and down and by adjusting the screws 6'1 and 61 to shift the roller shaft 12 longitudinally of, the-slot 66 of the arm member 64 into the. desired radial distance from the axis of the stub shaft 65.

It will be noted that the stub shaft 65 passesloosely through the opening 10 in the clamp member 63 so as not to interfere with the free action of the clamp, but is securely seated within the opening 'H in clamp member 63 when screw 69 is tightened. This permits the J clamp to be shifted into the desired elevated "shaft in adjusted position relatively to a cylinodriicalstationary s pport therefor comprising an armhaying a longitudinally extending elongated slot adaptedto receive therein an end portion f thej-shaft,setscrews extending into said elongated: slotthrough opposite ends of said arm having; -,axesregistering with the longitudinal 1axis=-of: said-sl ot adapted to secure said shaft in selectively adjusted position longitudinally of 4 said slot, a clamp adapted to be secured to a cylindrical stationary support comprising a pair of similarly shaped oppositely disposed adjacent clamping jaws each having an arcuate seat whereby to embrace opposite sides of said stationary support, a headed screw extending within correspondingends of said-jaws having threaded engagement with one of said jaws and free rotation in the other one of said jaws adjacent to the head of said screw, the free ends of said jaws being provided with axially aligned frusto-conically shaped holes, a hollow tubular stub shaft fonsupporting said arm in radially adjusted position on said clamp formed integrally with one end of said arm and having a screw-threaded interior portion with relatively axially offset frusto-conica'l exterior face portions adapted to be seated in said aligned frusto-conical holes in thezfreeends of said jaws when said arm is rotatively secured to said clamp, and a headed second screw extending through an opening in one of said jaws into threaded engagement with said threaded interior portion of said stub shaft.

FRANK JOSEPH BLUME.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 628,714 Ingersoll July 11, 1899 1,263,560 Kaufmann Apr. 23, 1918 1,731,468 Lind Oct. 15, 1929 

